build: switch to yarn

.circleci/config.yml

@@ -8,7 +8,7 @@
 # http://yaml-online-parser.appspot.com/
 
 var_1: &docker_image angular/ngcontainer:0.6.0
-var_2: &cache_key v2-ng-mat-{{ .Branch }}-{{ checksum "package-lock.json" }}-0.6.0
+var_2: &cache_key v2-ng-mat-{{ .Branch }}-{{ checksum "yarn.lock" }}-0.6.0
 
 # Define common ENV vars
 var_3: &define_env_vars

.travis.yml

@@ -41,19 +41,22 @@ jobs:
       if: type = cron
 env:
   global:
-  - LOGS_DIR=/tmp/angular-material2-build/logs
-  - SAUCE_USERNAME=angular-ci
-  - BROWSER_STACK_USERNAME=angularteam1
-  - BROWSER_STACK_ACCESS_KEY=CaXMeMHD9pr5PHg8N7Jq
-  - BROWSER_PROVIDER_READY_FILE=/tmp/angular-material2-build/readyfile
-  - BROWSER_PROVIDER_ERROR_FILE=/tmp/angular-material2-build/errorfile
+    # Keep Yarn version in sync with Yarn version within Bazel WORKSPACE.
+    - YARN_VERSION=1.9.4
+    - LOGS_DIR=/tmp/angular-material2-build/logs
+    - SAUCE_USERNAME=angular-ci
+    - BROWSER_STACK_USERNAME=angularteam1
+    - BROWSER_STACK_ACCESS_KEY=CaXMeMHD9pr5PHg8N7Jq
+    - BROWSER_PROVIDER_READY_FILE=/tmp/angular-material2-build/readyfile
+    - BROWSER_PROVIDER_ERROR_FILE=/tmp/angular-material2-build/errorfile
 
 before_install:
   - source ./scripts/ci/travis-env.sh
+  - source ./scripts/ci/install-yarn.sh
   - if [[ "$TRAVIS_EVENT_TYPE" == "cron" ]]; then ./scripts/install-angular-snapshot.sh --only-save; fi
 
 install:
-  - npm install
+  - yarn install --frozen-lockfile --non-interactive
 
 before_script:
   - mkdir -p $LOGS_DIR
@@ -62,5 +65,6 @@ script:
   - ./scripts/ci/travis-script.sh
 
 cache:
+  yarn: true
   directories:
     - ./node_modules/

WORKSPACE

@@ -33,15 +33,21 @@ sass_repositories()
 
 # NOTE: this rule installs nodejs, npm, and yarn, but does NOT install
 # your npm dependencies. You must still run the package manager.
-load("@build_bazel_rules_nodejs//:defs.bzl", "node_repositories", "npm_install")
-node_repositories()
+load("@build_bazel_rules_nodejs//:defs.bzl", "node_repositories", "yarn_install")
+
+node_repositories(
+  # For deterministic builds, specify explicit NodeJS and Yarn versions. Keep the Yarn version
+  # in sync with the version of Travis.
+  node_version = "10.10.0",
+  yarn_version = "1.9.4",
+)
 
 # Use Bazel managed node modules. See more below: 
 # https://github.com/bazelbuild/rules_nodejs#bazel-managed-vs-self-managed-dependencies
-npm_install(
+yarn_install(
   name = "npm",
   package_json = "//:package.json",
-  package_lock_json = "//:package-lock.json",
+  yarn_lock = "//:yarn.lock",
 )
 
 # Setup TypeScript Bazel workspace